BioMedical Admissions Test (BMAT) Practice Test 2026 - Free BMAT Practice Questions and Study Guide

The relationship between speed, frequency, and wavelength in wave mechanics is largely defined by the equation: speed = frequency × wavelength. This fundamental equation indicates that the speed of a wave is directly proportional to its frequency and wavelength.

In the context of the chosen option, when the statement says "speed increases with decreasing wavelength," it highlights that when the wavelength gets shorter (decreases), if the speed remains constant, the frequency must increase. Hence, a decrease in wavelength can lead to an increase in frequency, demonstrating the interdependence of these variables.

Furthermore, speed would increase if the frequency increases while keeping the wavelength consistent. Therefore, the choice that emphasizes the direct connection between speed and changes in wavelength effectively demonstrates an accurate understanding of wave properties. This provides a clearer perspective on how changes in one of the parameters directly influence the others, reinforcing the coherent relationship among speed, frequency, and wavelength in wave mechanics.